accommodation

nounac·com·mo·da·tion \ə-ˌkäm-ə-ˈdā-shən\(Medical Dictionary)

Medical Definition of ACCOMMODATION

: an adaptation or adjustment especially of a bodily part (as an organ): as a: the automatic adjustment of the eye for seeing at different distances effected chiefly by changes in the convexity of the crystalline lens b: the range over which such adjustment is possible